Gen. Nicholson: Decision to Use 'Mother of All Bombs' in Afghanistan Purely Tactical

KABUL, April 14 (Reuters) - The top U.S. military commander in Afghanistan said on Friday his decision to deploy one of the largest conventional bombs used in combat was done in communication with officials in Washington and was a purely tactical decision.

"This was the right weapon for the right target," Gen. John Nicholson told reporters at a news conference in Kabul.

The 21,600-pound GBU-43 bomb was dropped from an MC-130 aircraft in the Achin district of the eastern province of Nangarhar, which borders Pakistan against a network of tunnels that Afghan and U.S. officials said was being used by militants linked to Islamic State.

Afghan officials said 36 fighters loyal to Islamic State were killed.